When learning how to improve your pronunciation such that it is more in line with your target dialect of English, it is important to consider how your native language influences your English diction.
Become aware of differences in the rhythm and intonation of Indian and your target dialect of English. For speakers of one dialect of English, another dialect is sometimes unintelligible. Understanding rules of stress in words and sentences will be key.
One informal way to do this is to watch English movies or listen to English music with subtitles and practice saying the same lines in the same way.